Testing the Parametric Specification of the Diffusion Function in a Diffusion Process Staff Working Paper 2005-35 Fuchun Li A new consistent test is proposed for the parametric specification of the diffusion function in a diffusion process without any restrictions on the functional form of the drift function. Content Type(s): Staff research, Staff working papers Topic(s): Econometric and statistical methods, Interest rates JEL Code(s): C, C1, C12, C14